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Fix bug in vmapbuf, was using len before it had been adjusted. Found by Frank while Luke was tracking down a bug.

This commit is contained in:
chris 2001-09-20 23:32:23 +00:00
parent d9f326efb9
commit 8fd1ceb7bf
1 changed files with 2 additions and 3 deletions
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5
sys/arch/arm/arm32/vm_machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: vm_machdep.c,v 1.6 2001/09/10 21:19:35 chris Exp $ */
/* $NetBSD: vm_machdep.c,v 1.7 2001/09/20 23:32:23 chris Exp $ */
/*
* Copyright (c) 1994-1998 Mark Brinicombe.
@ -324,11 +324,10 @@ vmapbuf(bp, len)
if ((bp->b_flags & B_PHYS) == 0)
panic("vmapbuf");
taddr = uvm_km_valloc_wait(phys_map, len);
faddr = trunc_page((vaddr_t)bp->b_saveaddr = bp->b_data);
off = (vaddr_t)bp->b_data - faddr;
len = round_page(off + len);
taddr = uvm_km_valloc_wait(phys_map, len);
bp->b_data = (caddr_t)(taddr + off);
/*